21202224114021 has 4 divisors (see below), whose sum is σ = 28269632152032. Its totient is φ = 14134816076012.

The previous prime is 21202224114017. The next prime is 21202224114041. The reversal of 21202224114021 is 12041142220212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21202224114021 - 2² = 21202224114017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21202224113982 and 21202224114000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202224114041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3533704019001 + ... + 3533704019006.

It is an arithmetic number, because the mean of its divisors is an integer number (7067408038008).

Almost surely, 2^{21202224114021} is an apocalyptic number.

It is an amenable number.

21202224114021 is a deficient number, since it is larger than the sum of its proper divisors (7067408038011).

21202224114021 is an equidigital number, since it uses as much as digits as its factorization.

21202224114021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7067408038010.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 21202224114021 its reverse (12041142220212), we get a palindrome (33243366334233).

The spelling of 21202224114021 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-four million, one hundred fourteen thousand, twenty-one".